Bloodwork shows very low vitamin d. i take 2000 i u a day. she increased it another 1000 i u. should i worry about the increase. what is normal?

Probably need more!: Most adults need 5-8000 iu of d3 a day to achieve optimal blood levels of 50-80. But very low levels while on 2000 iu/day is unusual. I wonder if you are absorbing the type you take. Consider trying a different brand, take it with food, and increase to 5000/day. Now that spring is here you can also get d from sun exposure. See http://bit.Ly/1gnxnk0 ; http://bit.Ly/1dc7vna ; http://bit.Ly/1cxzalv.